IDW11120
Australian Government Bureau of Meteorology
Western Australia
Issued at 1:01 am WST on Sunday 18 January 2026
for the period until midnight WST Tuesday 20 January 2026.
Please be aware
Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.
A broad trough lies over northern parts of the state and will persist into next week, directing fresh west to southwesterly winds over parts of the northern waters. A tropical low is forming over the western Top End in the Northern Territory this weekend, forecast to move into the Timor Sea to the north of the Kimberley early next week.
Winds: Southwesterly 15 to 25 knots, reaching up to 30 knots east of Kalumburu early in the morning. Seas: 1 to 2 metres. Swell: Westerly around 1 metre. Weather: Cloudy. 80% chance of rain. The chance of a thunderstorm.
Winds: Southwesterly 15 to 25 knots, reaching up to 30 knots east of Kalumburu during the afternoon and evening. Winds tending northwest to southwesterly in the evening. Seas: 1 to 2 metres. 1st Swell: Westerly around 1 metre, increasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2.5 metres during the afternoon. 2nd Swell: Below 0.5 metres, tending northerly 1 to 1.5 metres by early evening. Weather: Cloudy. 80% chance of rain. The chance of a thunderstorm in the morning and afternoon.
Winds: Northwest to southwesterly 15 to 20 knots becoming northwesterly 10 to 15 knots during the evening. Seas: 1 to 2 metres. 1st Swell: West to northwesterly 2 to 4 metres. 2nd Swell: East to northeasterly around 1 metre, increasing to 2 to 3 metres during the afternoon or evening. Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm.
Winds: West to southwesterly 15 to 20 knots, reaching up to 25 knots offshore in the late evening. Seas: 1 to 1.5 metres. Swell: Westerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore south of Cape Leveque. Weather: Partly cloudy. The chance of a thunderstorm.
Winds: West to southwesterly 15 to 20 knots, reaching up to 25 knots offshore north of Broome early in the morning. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres offshore north of Cape Leveque. Swell: Westerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore north of Cape Leveque during the morning. Weather: Partly cloudy. The chance of a thunderstorm.
Winds: Westerly 15 to 20 knots tending southwesterly during the morning then tending northwest to southwesterly 10 to 15 knots during the day. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. 1st Swell: Westerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore during the morning. 2nd Swell: Below 0.5 metres, tending north to northeasterly 1 to 1.5 metres during the morning. Weather: Partly cloudy. The chance of a thunderstorm.
Winds: Westerly 15 to 25 knots. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm east of Port Hedland.
Winds: Westerly 15 to 25 knots. Seas: 1.5 to 2 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm east of Port Hedland in the morning and afternoon.
Winds: Westerly 15 to 20 knots. Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning. Swell: Westerly around 1 metre. Weather: Mostly sunny. The chance of a thunderstorm in the morning.
Winds: West to northwesterly 10 to 15 knots, reaching up to 20 knots offshore east of Barrow Island during the afternoon and evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore east of Barrow Island. Swell: West to southwesterly around 1 metre inshore, increasing to 1.5 to 2 metres about offshore western waters. Weather: Sunny.
Winds: Westerly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: West to southwesterly around 1 metre inshore, increasing to 1.5 to 2 metres about offshore western waters. Weather: Sunny.
Winds: West to northwesterly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: West to southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the afternoon. Weather: Mostly sunny.
The next routine forecast will be issued at 7:01 am WST Sunday.
* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine
Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones